There is an option in Admin / User Accounts / User Settings which allows you to specify the "Users display mode in Manage Roles". For dotnetnuke.com we specify Textbox, as a Combobox will not be sufficient for 375,000 users. Once you get over 10,000 users you start running into these data volume scale issues - and the good thing is that we are constantly addressing them as we use the application in a high volume production environment.

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My comments are my own and are offered WITHOUT PREJUDICE

Shaun Walker
http://www.siliqon.com

We have a product that will let you create massive numbers of test accounts. Contact us through our website www.ucanuse.com It would take a LONG time to generate 1,000,000 but you could quickly generate 10,000 and see how your modules handle that. It would be a good idea to setup a test site and test the full range of functionallity you'll rely on for your site. Be sure to include any third-party modules. DNN may handle the load in general but I don't know if you could use the newsletter feature to send mail to all registered users. I think the number of concurrent users and the number of pages on th site, etc could all have a large impact as well.

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